<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<style>
  div {
    width: 200px;
    height: 200px;
    background-color: pink;
    /*solid : 实践*/
    /*border: 1px solid #000;*/
    /*dashed:虚线*/
    /*border : 5px dashed #000;*/
    /*dotted : 点线*/
    border-left: 5px dotted #000000;
  }
</style>
<body>
<div>文字</div>
</body>
</html>
